La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Behaviour of Crane (Grus grus) families in their breeding territories in Northeast Germany: parental care and investment
Auteurs :	G. Nowald, Auteur
Type de document :	Article
Dans :	Journal of Ornithology (142(4) OCT 2001)
Article en page(s) :	390-403
Langues:	Anglais
Résumé :	ability and a lower food intake rate than adults. This - it has been presumed - is compensated for by parental care and investment during juvenile development. Studies of time budgets and parental investment of Common Cranes were carried out in the years 1995 to 1999 in Northeast Germany. Having first marked young Cranes (colour rings, radio transmitters), we analysed the behaviour of parents and offspring to correlate this with reproductive success, Parents with young (39.6%) were four times more vigilant than non-breeders. The investment of pairs with two young was significantly (p

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